### What changes were proposed in this pull request?
To make the test suite more robust, this PR aims to add a new trait, `LocalRootDirsTest`, by refactoring `SortShuffleSuite`'s helper functions and applying it to the following:
- ShuffleNettySuite
- ShuffleOldFetchProtocolSuite
- ExternalShuffleServiceSuite
- KubernetesLocalDiskShuffleDataIOSuite
- LocalDirsSuite
- RDDCleanerSuite
- ALSCleanerSuite
In addition, this fixes a UT in `KubernetesLocalDiskShuffleDataIOSuite`.
### Why are the changes needed?
`ShuffleSuite` is extended by four classes but only `SortShuffleSuite` does the clean-up correctly.
```
ShuffleSuite
- SortShuffleSuite
- ShuffleNettySuite
- ShuffleOldFetchProtocolSuite
- ExternalShuffleServiceSuite
```
Since `KubernetesLocalDiskShuffleDataIOSuite` is looking for the other storage directory, the leftover of `ShuffleSuite` causes flakiness.
- https://amplab.cs.berkeley.edu/jenkins/view/Spark%20QA%20Test%20(Dashboard)/job/spark-master-test-sbt-hadoop-3.2/2649/testReport/junit/org.apache.spark.shuffle/KubernetesLocalDiskShuffleDataIOSuite/recompute_is_not_blocked_by_the_recovery/
```
org.apache.spark.SparkException: Job aborted due to stage failure: task 0.0 in stage 1.0 (TID 3) had a not serializable result: org.apache.spark.ShuffleSuite$NonJavaSerializableClass
...
org.apache.spark.shuffle.KubernetesLocalDiskShuffleDataIOSuite.$anonfun$new$2(KubernetesLocalDiskShuffleDataIOSuite.scala:52)
```
For the other suites, the clean-up implementation is used but not complete. So, they are refactored to use new trait.
### Does this PR introduce _any_ user-facing change?
No, this is a test-only change.
### How was this patch tested?
Pass the CIs.
Closes#32986 from dongjoon-hyun/SPARK-35832.
Authored-by: Dongjoon Hyun <dongjoon@apache.org>
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>
4f51e0045e